グルコン酸イオン感応性センサーの試作

概要

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For the purpose of developing ion sensitive sensors for the measurement of the gluconate ion, gluconate ion sensitive liquid ion exchangers were trapped in a polyvinyl chloride membrane to form a gluconate ion selective electrode and gluconate ion-sensitive field effect transistor (ISFET). The electrode showed a linear response to gluconate ion activity between l0^0 mol dm^<-3> and 10^<-4> mol dm<-3> and the average potential change against decade change of gluconate ion activity was -48 mV, when tridodecylmethylammo-nium-gluconate was used as an ion exchanger. Almost identical response characteristics were observed for the gluconate ISFET. Selectivity coefficients of the electrode for various anions were determined with the separate solution. mixed solution and the continuous variation methods. The electrode showed constant potential in the pH range of 4 to 10. The electrode exhibited steady potential within 3 s after a change of gluconate concentration in the solution from 1.0×10^<-3> mol dm<-3> to 5.5×l0^<-3> mol dm<-3>.
社団法人日本分析化学会の論文
1993-08-05